returns a string escaped according to the rules specified in RFC 2253.
Parameters: obj - the String or byteArray to escape The escaped value throws: ClassCastException - when obj is not an instance of String or ByteArray
Given an attribute value string formated according to the rules specified
in RFC 2253, returns the unescaped value.
Parameters: val - String to unescape the unescaped value (String or ByteArray)